After this, we do cry and column with the following formula.
( r x c ) x ( r – 1 ) x ( c – 1 ) + ( r – 2 ) x ( c – 2 )………0
Count of rectangle and quadrilaterals
For counting rectangles and quadrilateral shapes, we will use a second formula, which is how we calculate rows and columns
First thing in the first formula
First thing in the first formula
[( r ) + (r -1 ) + ( r-2) +(r-3) …..0] x [ ( c ) +(c-1)+(c-2)+(c-3)…..0]
This formula is used only for that rectangle and quadrilateral, whose shape is made of columns and birds, the quadrilateral divides into equal parts
Count of triangle
In the count of triangles, we start the first one and work the triangle equally, after which the cart number is added, this is the number of askingWatch the video
Count of shells
We do not have any type of formula for counting of the balls, we normally do one by one, from small to large, which is stated in the video.Watch the video